EP0426143B1 - Procédé et dispositif d'extraction de métaux de pierres et de sédiments - Google Patents

Procédé et dispositif d'extraction de métaux de pierres et de sédiments Download PDF

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Publication number
EP0426143B1
EP0426143B1 EP90120878A EP90120878A EP0426143B1 EP 0426143 B1 EP0426143 B1 EP 0426143B1 EP 90120878 A EP90120878 A EP 90120878A EP 90120878 A EP90120878 A EP 90120878A EP 0426143 B1 EP0426143 B1 EP 0426143B1
Authority
EP
European Patent Office
Prior art keywords
chamber
duct
jet
solvent
present
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP90120878A
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German (de)
English (en)
Other versions
EP0426143A1 (fr
Inventor
Alexander Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Erwin Mueller GmbH and Co
Original Assignee
Erwin Mueller GmbH and Co
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE19893936303 external-priority patent/DE3936303A1/de
Application filed by Erwin Mueller GmbH and Co filed Critical Erwin Mueller GmbH and Co
Publication of EP0426143A1 publication Critical patent/EP0426143A1/fr
Application granted granted Critical
Publication of EP0426143B1 publication Critical patent/EP0426143B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/02—Apparatus therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D11/00—Solvent extraction
    • B01D11/02—Solvent extraction of solids
    • B01D11/0215—Solid material in other stationary receptacles
    • B01D11/0253—Fluidised bed of solid materials
    • B01D11/0257—Fluidised bed of solid materials using mixing mechanisms, e.g. stirrers, jets
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
    • C22B3/00—Extraction of metal compounds from ores or concentrates by wet processes
    • C22B3/04—Extraction of metal compounds from ores or concentrates by wet processes by leaching
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P10/00—Technologies related to metal processing
    • Y02P10/20—Recycling

Definitions

  • the invention relates to a method for removing metals from rocks, slurries, liquid deposits, ashes or similar materials.
  • the invention also relates to a swirl chamber used in this method.
  • the metal is released from the material in which it is contained, such as ore and rock, by chemical reaction with a solvent.
  • the material containing the metals is brought into contact with this solvent.
  • the generic FR-A-1.347.284 discloses a process of the type mentioned in the introduction, in which the mixture containing metal is brought to an approximately floury consistency, mixed with water and then treated with solvent.
  • DE-C-971.250 discloses a process for the treatment of small-scale or powdery substances, which is also suitable for removing metals from, for example, sludges.
  • the metal-containing mixture is completely wetted with the mixture jet and whirled together intimately and then passed through a sieve which only allows liquid and particles dissolved therein to pass through.
  • the invention has for its object to provide a way to remove metals from rocks or other materials that is economically simple and therefore inexpensive and still very effective.
  • the process according to the invention is characterized by the following additional process steps:
  • the mixture containing metal, mixed with water and optionally with a lubricant, is under pressure against one under high pressure emerging beam directed.
  • This high pressure jet also contains a solvent.
  • the impact of the mixture jet on the pressure jet containing the solvent ensures that the floury mixture contained in the mixture comes completely into contact with the solvent.
  • all liquid and floury constituents are whirled together and finally passed through a sieve, only the liquid constituents with the metal particles dissolved in them being able to pass through the sieve and be collected.
  • the metal present in the liquid can then be obtained by subsequent electrolysis, for example. It has been found that such a method can be used to remove metals from rocks, sludges, liquid deposits, ashes or similar materials in an economically very simple manner.
  • a special development of the method according to the invention is characterized in that the intermingled products remain mixed with one another for a while.
  • This separate preparation can take place, for example, by mechanically mixing the products together for a while.
  • air and / or oxygen and / or heat for example in the form of water vapor and / or further solvent, can optionally be added to the liquid mixture.
  • the device used in the method according to the invention is characterized by a swirling chamber with at least one sack-like bulge.
  • the swirling chamber has at least one inlet opening for the access of at least one supply channel into this chamber. This opening lies opposite the sack-like bulge in the direction of flow.
  • the chamber also has an outflow opening, which is approximately at right angles to the supply channel, at the other end of the chamber.
  • the supply channel is a high pressure pump assigned, with which the liquid mixture of water and solvent can be pressed under high pressure into the swirling chamber. The outflow takes place through a sieve which only allows liquid with the metal particles dissolved in it to pass.
  • At least one further channel opens obliquely into the feed channel or directly into the swirling chamber, the channel mouth of which is designed in particular as a nozzle.
  • This channel serves to introduce the mixture of floury mixture and at least water.
  • a high-pressure pump is also assigned to this channel, so that this mixture can be directed under pressure against the mixture jet emerging from the supply channel.
  • the device according to the invention is characterized by a chamber which is provided with an inlet opening and an outlet opening.
  • the inlet opening is connected to the outlet channel of the housing containing the swirl chamber and the outlet opening is connected to the settling and processing basin.
  • the chamber there is also an agitator by means of which the liquid mixture in the chamber can be moved around in the chamber.
  • the size of this chamber depends on the amount of liquid to be treated and the length of time this amount of liquid remains.
  • a cavity in the form of a swirl chamber 12 is present in a housing block 10.
  • This swirl chamber has a sack-like bulge 14 into which a channel 16 opens from above.
  • the mouth opening 18 of this channel 16 lies approximately opposite the sack-like bulge 14, on the edge of the swirl chamber 12, which is the top in the drawing.
  • the swirl chamber 12 opens into an outlet channel 20 which leads out of the housing block 10.
  • the channel 16 leads from the mouth opening 18 - in the drawing vertically upwards - out of the housing block 10. It is connected to a feed line 24 in which a high-pressure pump 26 is present.
  • a branch line 28, 30 opens into the channel 16 from opposite sides. Both branch lines 28, 30 end in the region of the channel 16 in the form of a nozzle 32.
  • the two branch lines 28, 30 branch off from a feed line 34, in which a high-pressure pump 36 is also present.
  • the cross-section of the swirling chamber 12 is disc-like.
  • the sack-like bulge 14 is only present parallel to a plane within the housing block 10.
  • a settling or collecting basin 40 which is covered with a sieve 42.
  • This sieve which is only symbolically indicated in the drawing, serves to retain sludge or other coarser constituents emerging from the swirling chamber 12, so that only liquid constituents can penetrate downward through the sieve 42.
  • a mixture is introduced into the channel 16 from above introduced from water and solvent.
  • this mixture enters the channel 16 in the form of a strong mixture jet 46.
  • a mixture of water, a floury, metal-containing mixture and solvent is also pushed through the branch lines 28, 30 through the feed line 34 by the high-pressure pump 36 under pressure.
  • the mixture jet 46 hits the mixture jet 46 at approximately a right angle. In this collision, the mixtures are atomized very finely, so that the floury components can also come into chemical contact with the solvent present in the mixture jet 46.
  • the chemical reaction caused thereby is continued and intensified by the fact that the mixture jet 46 below the nozzles 32 is further intimately swirled with the mixture in the swirling chamber 12 and mixed therewith.
  • the content of the swirling chamber 12 then emerges from the housing block 10 through the outlet channel 20 and is conducted to the sedimentation and treatment basin 40 via a pipe (not shown) (arrow 38). Due to the sieve 42 present in the basin 40, the sludge and other larger or firmer constituents are retained, so that only liquid constituents 50 can collect in the basin 40, below the sieve 42.
  • the metal particles are now present in dissolved form in this liquid 50. The metals can then be separated from this liquid, for example by electrolysis.
  • a pipeline 62 leads from the outlet channel 20 of the housing block 10 to an inlet opening 64 present in the basin 60.
  • the inlet opening 64 is located in the lower side region of this basin 60.
  • outlet opening 66 In the upper area and opposite the inlet opening 64, there is an outlet opening 66.
  • This outlet opening 66 is connected via a further pipeline 68 to a sedimentation and treatment basin 40.
  • This pipeline 68 ends in a settling basin 40 in the same way as the pipeline represented by arrow 38 in FIG. 1.
  • An agitator 70 which is provided with a plurality of radially arranged agitator blades 72, is arranged in the basin 60 upstream of this region 40. Openings 74 are present at least in the lower region of these stirring blades 72.
  • the rotary shaft 76 of the agitator 70 is hollow in the form of a further inlet channel 75, so that an additional medium such as air and / or oxygen and / or another solvent can be input through this shaft 76, which plunges vertically into the basin 60 from above can. These added products then flow through openings 74 into the chamber. When the stirring blades 72 are rotated, these additional products mix intimately with the liquid mixture present in the basin 60.
  • FIG 3 shows a structural variant in the area of the feed line between the branch channels 28, 30 and that into the swirl chamber 12 leading supply channel 16 shown.
  • the two branch lines 28, 30 do not lead directly into channel 16; rather, the two lines 28, 30 each open into an arcuate channel piece 80, 82.
  • the two duct pieces 80, 82 then in turn open into the duct 16 opposite one another, as is shown in FIG. 1 for the lines 28, 30.
  • the arcuate channel pieces 80, 82 have the purpose that the floury mixture supplied in the lines 28, 30 can mix even more intimately with the solvent present.
  • the floury mixture is braked on the outer wall of the channel pieces 80, 82 in its flow rate, so that additional mixing can take place in the cross-sectional area of the two channel pieces 80, 82.
  • the common mixing jet 90 consisting of the jets 84, 86, 88 enters directly into a swirling chamber 12.1, namely at - in the example of FIG. 4 two - opposite points of this chamber 12.1. Instead of these two, there may also be several discharge points.
  • the mixing jets 90 can open directly through the inlet channels 28, 30 or indirectly through interposed channel pieces 80, 82 directly into the swirling chamber 12.1 with the bulge 14.1.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Geology (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Environmental & Geological Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Geochemistry & Mineralogy (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Manufacture And Refinement Of Metals (AREA)
  • Extraction Or Liquid Replacement (AREA)
  • Treatment Of Sludge (AREA)
  • Disintegrating Or Milling (AREA)
  • Processing Of Solid Wastes (AREA)

Claims (16)

  1. Procédé pour l'extraction de métaux par lixiviation de roches, de boues, de produits de décantation de liquides ou de cendres au moyen d'un mélange liquide contenant de l'eau et un agent de lixiviation, dans lequel :
    a) le produit contenant du métal est amené à une consistance par exemple farineuse, et :
    b) ce produit farineux est mélangé à de l'eau et, le cas échéant, à un agent de glissement,
    caractérisé par le fait que :
    c) ce mélange est dirigé sous pression sur un jet, sortant sous haute pression, du mélange liquide contenant de l'eau et un agent de lixiviation, et ce, d'une manière telle que le mélange rencontre le jet, de sorte que le mélange est mouillé complètement par ce jet mixte,
    d) le jet et le mélange sont alors brassés ensemble intimement par tourbillonnement, et ensuite :
    e) les produits ayant tourbillonné sont amenés à passer à travers un tamis tel que seuls le liquide et les particules métalliques qui y sont présentes à l'état dissous peuvent arriver à traverser le tamis.
  2. Procédé selon la revendication 1, caractérisé par le fait qu'entre les étapes d) et e) du procédé, les produits ayant tourbillonné restent soumis un certain temps à une préparation en étant mélangés entre eux.
  3. Procédé selon la revendication 2, caractérisé par le fait que les produits sont mélangés entre eux un certain temps par voie mécanique.
  4. Procédé selon la revendication 2 ou 3, caractérisé par le fait que, pendant cette durée de séjour, on ajoute au mélange liquide de l'air et/ou de l'oxygène et/ou un autre agent de lixiviation.
  5. Procédé selon l'une des revendications 1 à 4, caractérisé par le fait que le mélange contenant du métal est broyé jusqu'à une consistance farineuse.
  6. Procédé selon l'une des revendications 1 à 5, caractérisé par le fait que le procédé est mis en oeuvre avec un apport de chaleur.
  7. Procédé selon la revendication 6, caractérisé par le fait que la chaleur est fournie sous la forme de vapeur d'eau.
  8. Procédé selon l'une des revendications 1 à 7, caractérisé par le fait que l'on ajoute un agent de lixiviation au mélange contenant le métal avant que le mélange ne soit dirigé sous pression sur le ou les jets d'eau et d'agent de lixiviation qui sortent sous haute pression.
  9. Dispositif pour la mise en oeuvre du procédé selon la revendication 1, caractérisé par le fait que :
    - il est prévu un carter (10) qui comprend une chambre de tourbillonnement (12) pourvue d'un renflement en forme de poche (14, 14.1),
    - dans cette chambre (12) débouche au moins un canal d'amenée (16, 86, 88) dont l'embouchure est en face du renflement en forme de poche (14, 14.1),
    - il est prévu dans la chambre de tourbillonnement (12, 12.1) une ouverture de sortie (20) qui se trouve à l'autre extrémité de la chambre (12, 12.1), à angle droit par rapport au canal d'amenée (16, 86, 88),
    - au canal d'amenée (16, 86, 88) est associée une pompe à haute pression (26) au moyen de laquelle le mélange liquide d'eau et d'agent de lixiviation peut être forcé sous haute pression à travers le canal d'amenée (16, 86, 88) sous la forme d'un jet (46) et peut être introduit dans la chambre de tourbillonnement (12, 12.1),
    - il est prévu au moins un autre canal d'introduction (28, 30),
    - à cet autre canal ou à ces autres canaux (28, 30) est associée une pompe à haute pression (36) au moyen de laquelle le mélange contenant le métal peut être introduit sous pression d'une manière telle que le mélange rencontre le jet (46),
    - il est prévu un tamis (42) destiné à être traversé par les produits ayant tourbillonné et à travers lequel seul peut passer du liquide contenant les particules métalliques renfermées dans celui-ci à l'état dissous.
  10. Dispositif selon la revendication 9, caractérisé par le fait que l'embouchure du ou des canaux d'amenée (16, 86, 88) est réalisée en forme de buse (32).
  11. Dispositif selon la revendication 9, caractérisé par le fait qu'il est prévu au moins deux autres canaux d'introduction (28, 30) qui sont diamétralement opposés par leurs embouchures et hors desquels le mélange contenant du métal peut être amené pour produire un choc mutuel.
  12. Dispositif selon la revendication 11, caractérisé par le fait que les deux autres canaux d'introduction (28, 30) présentent une courbure (80, 82) dans la région de leur embouchure ou avant celle-ci, respectivement.
  13. Dispositif selon l'une des revendications 9 à 12, caractérisé par le fait que le ou les autres canaux sont constitués par plusieurs parties de canaux d'une manière telle que le mélange contenant le produit farineux ne sorte que d'une première partie de canal (28, 30), et que le mélange ne contenant pas le produit farineux ne sorte que d'au moins une deuxième partie de canal (86, 88), les mélanges qui sortent des parties de canaux se réunissant en un jet mixte unique (90) avant l'entrée dans la chambre de tourbillonnement (12, 12.1) ou lors de celle-ci.
  14. Dispositif selon l'une des revendications 9 à 13, caractérisé par le fait que :
    - il est prévu une chambre (60) pourvue d'une ouverture d'entrée (64) et d'une ouverture de sortie (66),
    - l'ouverture d'entrée (64) est reliée au canal de sortie (20) du carter (10) et l'ouverture de sortie (66) est reliée à un bassin de décantation et de préparation (40),
    - il est prévu dans la chambre (60) un agitateur (70) au moyen duquel le mélange liquide qui se trouve dans la chambre (60) peut être agité circulairement.
  15. Dispositif selon la revendication 14, caractérisé par le fait qu'il est prévu au moins un autre canal d'entrée (75) qui est destiné à amener l'air et/ou l'oxygène et/ou l'autre agent de lixiviation et/ou de la chaleur.
  16. Dispositif selon la revendication 15, caractérisé par le fait que l'autre canal d'entrée (75) se termine dans les ailettes d'agitation (72) de l'agitateur (70) par de nombreuses ramifications, et qu'il débouche dans la chambre par des ouvertures (74) prévues dans les ailettes d'agitation (72).
EP90120878A 1989-11-01 1990-10-31 Procédé et dispositif d'extraction de métaux de pierres et de sédiments Expired - Lifetime EP0426143B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE19893936303 DE3936303A1 (de) 1989-11-01 1989-11-01 Verfahren und vorrichtung zum herausloesen von metallen aus gesteinen und ablagerungen
DE3936303 1989-11-01
DE4006336A DE4006336A1 (de) 1989-11-01 1990-03-01 Verfahren und vorrichtung zum herausloesen von metallen aus gesteinen und ablagerungen
DE4006336 1990-03-01

Publications (2)

Publication Number Publication Date
EP0426143A1 EP0426143A1 (fr) 1991-05-08
EP0426143B1 true EP0426143B1 (fr) 1994-07-06

Family

ID=25886619

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90120878A Expired - Lifetime EP0426143B1 (fr) 1989-11-01 1990-10-31 Procédé et dispositif d'extraction de métaux de pierres et de sédiments

Country Status (5)

Country Link
EP (1) EP0426143B1 (fr)
AT (1) ATE108077T1 (fr)
DE (3) DE4006336A1 (fr)
DK (1) DK0426143T3 (fr)
ES (1) ES2059955T3 (fr)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ATE149576T1 (de) * 1991-02-02 1997-03-15 Mueller Erwin Gmbh Verfahren und vorrichtung zum herauslösen von metallen aus gesteinen und ablagerungen
CA2097452A1 (fr) * 1992-06-02 1993-12-03 Ian Macdonald Sinclair Procede et appareil de recuperation des metaux contenus dans un minerai

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE971250C (de) * 1954-12-02 1958-12-31 Ruhrchemie Ag Verfahren zur Behandlung pulverfoermiger Stoffe mit Fluessigkeiten
FR1347284A (fr) * 1961-12-13 1963-12-27 Atomic Energy Authority Uk Procédé d'extraction à partir d'une plase solide dans une phase liquide, notamment de la matière fissile non consommée dans un combustible nucléaire
DE2738739B2 (de) * 1977-08-27 1979-11-22 Kernforschungsanlage Juelich Gmbh, 5170 Juelich Vorrichtung zur Extraktion von pulverformigem oder körnigem Material
US4887799A (en) * 1986-02-10 1989-12-19 Richard J. Moser Apparatus for treatment of ore particles

Also Published As

Publication number Publication date
ATE108077T1 (de) 1994-07-15
ES2059955T3 (es) 1994-11-16
EP0426143A1 (fr) 1991-05-08
DK0426143T3 (da) 1994-11-14
DE4103172A1 (de) 1992-08-06
DE4006336A1 (de) 1991-09-05
DE59006359D1 (de) 1994-08-11

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